Lectrosonics DMPA12 User Manual download pdf (Page 16)

DMPA12 Installation Guide

LECTROSONICS, INC.

Additional Settings and

Functions

In many cases the installer is required to make addition-

al settings and/or adjustments to enable functions such

as auxiliary remote controls using pots and switches.

Since some of these additional functions affect the ba-

sic signal ﬂow and levels, it is important for the installer

to understand what is available and how some of the

most important processes work.

Compressor and Limiter

The Compressor and Limiter have individual tabs for

setup, but since these functions are so closely related

in operation, LEDs in the upper part of the GUI indicate

the real time status of each process on every channel.

For a full explanation of these functions, refer the help

ﬁle included with the GUI or the Reference Manual

included on the supplied CD.

Compressor settings and parameters

Limiter settings and parameters

Front Panel Gain Controls

The gain of input and output audio channels is adjust-

able from the front panel of the DMPA12. This feature is

useful for system setup and adjustment, and may be left

enabled to allow users to “touch up” gains as needed

during operation.

Any or all of the front panel gain controls may be

“locked out” to prevent unauthorized changes to the

system. This is done using the Control Panel GUI (in

Device Setup Menu) or LecNet2 serial commands.

Changes made to the gain control lock settings take

effect immediately and are global in scope - the

same settings are in effect no matter what memory

“preset” is loaded.

Also under Device Setup are dialogue boxes to adjust

the range of the front panel control and a special option

that mutes the channel when the control is fully coun-

ter-clockwise. The minimum gain position has a special

meaning - the channel will be turned “off” when the control

is rotated to the fully counter-clockwise position.

NOTE: When the Front Panel Mute feature is

enabled, the minimum gain position has a special

meaning. The channel will be muted and the

associated activity indicator will blink RED to

warn the user that no audio is being passed. This

feature can be controlled using the supplied GUI

control panel or the serial command “fpmten.”

Gain can be increased or decreased within a range which

is centered around 0 dB (unity) gain. The range of adjust-

ment for each channel is individually programmable using

the Control Panel GUI (in Device Setup Menu) or LecNet2

serial commands. Changes made to the gain range

settings take effect immediately and are global in

scope - the same settings are in effect no matter

what memory “preset” is loaded. The default range is

30 dB (+/- 15 dB).

Front panel level controls can be locked out or enabled

with check boxes in a dialogue box under Device Setup.

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